You are correct. MPEG at it's core is more or less a variant of still image jpeg, and the quantization stage of jpeg can produce a ringing effect due to what the real meaning of the quantization pass in the frequency domain.
But in any case, the --keep-hf flag to mpeg2enc in my experience reduces the effect of the ringing of sharp edges sufficiently that I am unable to see the ringing on my TV. That's not to say it is not actually still present, just it is of a low enough magnitude to be drowned out by the real signal. --- Steven Boswell II <[EMAIL PROTECTED]> wrote: > > It's my understanding that sharp transitions between light & dark areas > are one of the hardest things for MPEG to encode accurately. MPEG is > designed for "natural" images (i.e. stuff recorded from real-world > sources). > Sounds like you had some success getting rid of it with yuvmedianfilter. > Keep us apprised of what works! That's one of the few artifacts I have > left in my video, and I'd love to figure out how to get rid of it. > Steven Boswell, [EMAIL PROTECTED] > > Al Bogner <[EMAIL PROTECTED]> wrote:A blue PC-created titel > with a light background shows a blue gleam around the letters. Also > I see at the edges of clothing a gleam. > > > --------------------------------- > Do you Yahoo!? > Yahoo! Web Hosting - establish your business online __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by:Crypto Challenge is now open! Get cracking and register here for some mind boggling fun and the chance of winning an Apple iPod: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
